dawson and g



A. T. DAWSON AND G. T. BUCKHAM'.

MOUNTING FOR AUTOMATIC GUNS.

APPLICATION man JUNE 2|.19n.

Patented Oct. 7,1919.

3 SHEETS-SHEET I.

A. T. DAWSON AND G. T. BUCKHAM.

MOUNTING FOR AUTOMATIC GUNS.

APPLICATION min JUNE 21.1917.

1,317,862. Patented 0%. 7,1919.

3 SHEETS-SHEET 2.

A. T. DAWSON AND G. T. BUCKHAM.

MOUNTING FOR AUTOMATIC GUNS.

APPLICATION FILED JUNEZX. 1917.

1,317,862. I Patented 001:. 7,1919.

3 SHEETS -SHEET 3.

* TED STATES PAT NT onnron.

ARTHUR TREVOR DAWSON AND GEORGE THOMAS BUCKHAM, OF WESTMINSTER, LONDON, ENGLAND, ASSIGNORS TO VIC'KERS LIMITED, OF WESTMINSTER,'

LONDON. ENGLAND.

MOUN TING FOR AUTOMATIC GUNS.

' Specification of Letters Patent.

Patented. Oct. 7, 1919.

Application filed June 21, 1917. 7 Serial No. 176,105;

To all whom it may concern. 7

Be it known that we, Sir ARTHUR TREVOR DAWSON, knight, and Gnonen THOMAS Boom HAM,'both subjects of the King of Great Britain, residing at Vickers House, Broadway, Westminster, in the county of London, England, have invented certain new and useful Improvements in or Relating to Mountings for. AutomaticGuns, of which the following is a specification.

This invention relates to mountings (particularlytripod mountings) for automatic guns in which the muzzle of the gun during training moves through a comparatively short distance, thus rendering the gun particularly suitable for firing through an aper ture in a shield or breastwork.

According to the invention the gun is connected to the crosshead member of the mounting through the intermediary of a rearwardly extending bar or tube whichcarries the gun in such a position that the axis of the training pivot intersects or approximately intersects the axis of the gun at or near the muzzle end thereof. This bar may be trunnioned at its forward end to the crosshead and may be connected at a point between its ends to the elevating screw or other elevating gear carried by the usual rearward extension of the crosshead.

In order that the said invention may be clearlyunderstood and readily carried into efiect we will describe the same more fully with reference to the accompanying drawings, in which Figures 1 and 2 are respectively a side elevation and a plan of a tripod. mounting provided with a constructional form of our I improvements, the gun having been removed from the mounting in Fig. 2.

Fig. 3 is a view similar to Fig. 1 showing the mounting in its raised or normal firing position,

Fig. 4 is a view similar to Fig. 3 show pivotally connected to the crosshead B by means of a detachable pin d. E is the elevating gear interposed between the bar 7 D and a rearward extension B of the cross head. g

In Figs. 1 to 3 the bar D is provided with two brackets D, D serving to receive pins d, d by which these brackets are attached to the usual elevating and trunnion lugs D D on the mechanism casing of the gun.

The said bar is also provided with a third bracket D serving to receive a pin 01 passing throughthe upper end of the screw of the elevating gear E; It will" be obvious that in this. constructionv the muzzle of the gun moves through a relatively short distance during elevation as well as during training. It therefore becomes possible to provide the shield or breastwork behind which the gun is situated with an aperture of small dimensions both as regards height and width.

In Fig. 4 the gun instead of being rigidly connected to the bar D is pivoted thereto by the pin 0Z thereby enabling the gun to be elevated and depressed about this'pin relatively to the bar. In this case the part of the bar to the rear of the trunnion lug is bent downward and provided with a clampgun at any desired angle of elevation.-' The member-ID is detaeliably "connected to the elevatinglug D by the pin cl.

It will be seen that in both constructional forms of the invention no alteration of the gun itself is necessary nor are any constructional variations in the mounting itself required; it is therefore possible to readily convert any existing gun and mounting by so constructing the aforesaid bar as to suit the particular type of the gun and mounting to be converted. It will also be observed that no training are is provided for supporting the rear end of the bar.

In the construction shown by Figs. 5 and 6 the bar D is so constructed and arranged that in addition to serving the purpose hereinbefore'described it will also serve to con nect the gun to the crosshead with the gun in the usual firing position in relation to the" axis of the training pivot, that is to say with the muzzle of the gun situated a substantial distance in front of the said axis laid or lost as would be the case if the said bar were removed prior to placing the gun. in its firing position in the usual way;

furthermore, the time occupied in changing from one position to the other is minimized as it is unnecessary to disconnect the gun from the bar. For this. purpose the bar is provided with two downwardly projecting brackets D D which are arranged immediately beneath and made integral with the brackets D, 1) serving for attachment to the elevating and trunnion lugs D D on the mechanism casing of the gun. Of these downwardly projecting brackets the forward one D is made to fit between the cheeks of the crosshead B and to receive the trunnion pin (l and the rear one D is so constructed as to permit the elevating screw to be connected thereto by the detachable pin (5 as shown in Fig. 6.

What we claim and desire to secure by Letters Patent of the United States is 1. In a mounting for an automatic gun, the combination'with the crosshead of the mounting, of a rearwardly extending member pivoted to the crosshead for elevating movements, a rearward extension of said crosshead, elevating gear between said rearward extension and said rearwardly extending member and means for connecting the gun to, said member in such a position that the axis of the training pivot intersects or approximately intersects the axis of the gun at or near the muzzle endthereof.

2. In a mounting for an automatic gun, the combination with the crosshead of the mounting, of a rearwardly extending member, means for pivoting said member to the crosshead, means for connecting said member to the elevating gear interposed between said crosshead and said member, and means for connecting the gun to said member in such a position that the axis of the training pivot intersects or-' approxmately intersects the axis oi the gun at or near the muzzle end thereof.

3. In a mounting for an automatic gun,

the combination with the crosshead of the mounting, of a rearwardly extending member'connected to the crosshead, means for connecting said member to the elevating gear interposed between the crosshead and said member, means for pivotally connecting the gun to said member in such a position that the axis of the training pivot intersects or approximately intersects the axis of the gun, at or near the muzzle end thereof and so that the gun can be elevated and depressed with respect to said member.

4:. In a mounting for an automatic gun, the combination with the crosshead of the mounting, of a rearwardly extending member connected to the crosshead, means for connecting the gun to said member, and means for connecting said member to the crosshead so that the axis of the training pivot intersects or approximately intersects the axis of the gun at or near the muzzle end thereof or so that the gun occupies its usual firing position in relation to the axis of the training pivot namely with the muzzle of the gun situated a substantial dis tance in front of said axis.

In testimony whereof we have hereunto set our signatures.

ARTHUR TREVOR DAWVSON. GEORGE THOMAS BUOKHAM.

Witnesses:

J NO. R. OAswnLL, GERT UDE IV'HYTE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

